Baked Potato with back

2 1/2 lbs potatoes , peeled and grated 1 cup onion , peeled and grated 1/2 cup carrot , peeled and grated 1/4 cup matzo meal 1 1/2 teaspoons salt 1/4 teaspoon[...]

4 large baking potatoes 2 large chicken breasts 4 tablespoons butter 1 tablespoon flour 2 cups milk 1 cup sour cream salt pepper garlic salt onion salt celery[...]